摘要:
Provided are a simple and convenient apparatus capable of analyzing carbon isotope 14 C and a method of analyzing the carbon isotope. A carbon isotope analyzer 1 including an isotopic carbon dioxide generator 40 to generate isotopic carbon dioxide from a carbon isotope; a spectrometer 10 including an optical resonator 11 having a pair of mirrors 12, and a photodetector 15 to determine the intensity of light transmitted from the optical resonator 11; and a light generator 20 including a light source 23, a first optical fiber 21 to transmit a light beam from the light source 23, a second optical fiber 22 for wavelength conversion, the second optical fiber 22 branching from the first optical fiber 21 at a point and combining with the first optical fiber 21 at another point downstream of the branching point, and a non-linear optical crystal 25 to generate light having the absorption wavelength of the isotopic carbon dioxide on the basis of the difference in frequency between light beams transmitted through the optical crystal 25.
摘要:
A carbon isotope analysis device including a carbon dioxide isotope generator provided with a combustion unit that generates gas containing carbon dioxide isotope from carbon isotope, and a carbon dioxide isotope purifying unit; a spectrometer including an optical resonator having a pair of mirrors and a photodetector that determines intensity of light transmitted from the optical resonator; and a light generator including a light source, a splitter that splits light from the light source, a focusing lens that focuses light from the splitter, and a mirror that reflects light from the focusing lens and sends the light back to the light source via the focusing lens and the splitter. A carbon isotope analysis device improved in stability of a light source and a carbon isotope analysis method by use of the analysis device are provided.
摘要:
A carbon isotope analyzer 1 includes a carbon dioxide isotope generator 40 that includes a combustion unit that generates gas containing carbon dioxide isotope from carbon isotope, and a carbon dioxide isotope purifying unit; a spectrometer 10 including an optical resonator 11 having a pair of mirrors 12, and a photodetector 15 that determines the intensity of light transmitted from the optical resonator 11; and a light generator 20 including a light source 23, a first optical fiber 21 to transmit a light beam from the light source 23, a second optical fiber 22 for wavelength conversion, the second optical fiber 22 splitting from the first optical fiber 21 at a point and combining with the first optical fiber 21 at another point downstream of the splitting point, and a non-linear optical crystal 25 that generates light having the absorption wavelength of the carbon dioxide isotope on the basis of the difference in frequency between light beams transmitted through the optical crystal 25. The carbon isotope analyzer 1 is a simple and convenient apparatus that can analyze isotope 14 C.
摘要:
Disclosed are: a neutron beam detector which comprises a material having low deliquescent properties and can discriminate between a neutron beam and a γ beam; a neutron beam detection scintillator; and a method for discriminating between a neutron beam and a γ beam. Specifically disclosed are: a neutron beam detection scintillator for use in the discrimination between a neutron beam and a γ beam based on the difference in waveforms of light detection signals, and which comprises Ce-containing LiCaAlF6 single crystals; a neutron beam detector which has a function of discriminating between a neutron beam and a γ beam based on the difference in waveforms of light detection signals from a neutron beam detection scintillator, and which is characterized by using a neutron beam detection scintillator comprising Ce-containing LiCaAlF6 single crystals as a neutron beam detection scintillator; and a method for discriminating between a neutron beam and a γ beam.